Subject: Re: [PATCH v17 02/10] x86: kdump: make the lower bound of crash
 kernel reservation consistent
To:     Baoquan He <bhe@redhat.com>
CC:     Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        <x86@kernel.org>, "H . Peter Anvin" <hpa@zytor.com>,
        <linux-kernel@vger.kernel.org>, Dave Young <dyoung@redhat.com>,
        Vivek Goyal <vgoyal@redhat.com>,
        Eric Biederman <ebiederm@xmission.com>,
        <kexec@lists.infradead.org>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        Rob Herring <robh+dt@kernel.org>,
        Frank Rowand <frowand.list@gmail.com>,
        <devicetree@vger.kernel.org>, "Jonathan Corbet" <corbet@lwn.net>,
        <linux-doc@vger.kernel.org>, Randy Dunlap <rdunlap@infradead.org>,
        Feng Zhou <zhoufeng.zf@bytedance.com>,
        Kefeng Wang <wangkefeng.wang@huawei.com>,
        Chen Zhou <dingguo.cz@antgroup.com>
References: <20211210065533.2023-1-thunder.leizhen@huawei.com>
 <20211210065533.2023-3-thunder.leizhen@huawei.com>
 <20211213133735.GB23510@MiWiFi-R3L-srv>
From:   "Leizhen (ThunderTown)" <thunder.leizhen@huawei.com>
Message-ID: <a6143bcb-e380-2270-7ccc-02309866ccab@huawei.com>
Date:   Tue, 14 Dec 2021 16:48:15 +0800
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On 2021/12/13 21:37, Baoquan He wrote:
> On 12/10/21 at 02:55pm, Zhen Lei wrote:
>> From: Chen Zhou <chenzhou10@huawei.com>
>>
>> The lower bounds of crash kernel reservation and crash kernel low
>> reservation are different, use the consistent value CRASH_ALIGN.
>>
>> Suggested-by: Dave Young <dyoung@redhat.com>
>> Signed-off-by: Chen Zhou <chenzhou10@huawei.com>
>> Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
> 
> You may need add Co-developed-by to clarify who is author, and who is
> co-author. Please check section "When to use Acked-by:, Cc:, and Co-developed-by:"
> of Documentation/process/submitting-patches.rst. Otherwise, 

Okay, thanks for the heads-up. I will modify it.

> 
> Acked-by: Baoquan He <bhe@redhat.com>
> 
>> Tested-by: John Donnelly <John.p.donnelly@oracle.com>
>> Tested-by: Dave Kleikamp <dave.kleikamp@oracle.com>
>> ---
>>  arch/x86/kernel/setup.c | 3 ++-
>>  1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
>> index 5cc60996eac56d6..6424ee4f23da2cf 100644
>> --- a/arch/x86/kernel/setup.c
>> +++ b/arch/x86/kernel/setup.c
>> @@ -441,7 +441,8 @@ static int __init reserve_crashkernel_low(void)
>>  			return 0;
>>  	}
>>  
>> -	low_base = memblock_phys_alloc_range(low_size, CRASH_ALIGN, 0, CRASH_ADDR_LOW_MAX);
>> +	low_base = memblock_phys_alloc_range(low_size, CRASH_ALIGN, CRASH_ALIGN,
>> +			CRASH_ADDR_LOW_MAX);
>>  	if (!low_base) {
>>  		pr_err("Cannot reserve %ldMB crashkernel low memory, please try smaller size.\n",
>>  		       (unsigned long)(low_size >> 20));
>> -- 
>> 2.25.1
>>
> 
> .
>